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AC/DC 和 DC/DC 转换器（集成 FET）

LM27342-Q1

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2A - 具有频率同步的宽输入范围降压稳压器

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TPS62903-Q1 正在供货 具有 165°C 结温的 3V 至 18V、3A 汽车类低 IQ 同步降压转换器 Higher efficiency with higher current, lower IQ and improved Vref accuracy in a smaller package.

LM27342-Q1

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米6体育平台手机版_好二三四详情

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 1750 Switching frequency (max) (kHz) 2300 Features Light Load Efficiency Control mode current mode Vout (min) (V) 1 Vout (max) (V) 18 Iq (typ) (µA) 2400 Duty cycle (max) (%) 93
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 2 Vin (min) (V) 3 Vin (max) (V) 20 Switching frequency (min) (kHz) 1750 Switching frequency (max) (kHz) 2300 Features Light Load Efficiency Control mode current mode Vout (min) (V) 1 Vout (max) (V) 18 Iq (typ) (µA) 2400 Duty cycle (max) (%) 93
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9
  • Space-Saving, 3 mm × 3 mm 10-Pin WSON and MSOP-PowerPAD Packages
  • Wide Input Voltage Range: 3 V to 20 V
  • Wide Output Voltage Range: 1 V to 18 V
  • LM27341 Delivers 1.5-A Maximum Output Current
  • LM27342 Delivers 2-A Maximum Output Current
  • High Switching Frequency: 2 MHz
  • Frequency Synchronization:
    1 MHz < fSW < 2.35 MHz
  • 150-mΩ NMOS Switch With Internal Bootstrap Supply
  • 70-nA Shutdown Current
  • Internal Voltage Reference Accuracy of 1%
  • Peak Current-Mode, PWM Operation
  • Thermal Shutdown
  • LM27341-Q1 and LM27342-Q1 are AEC-Q100 Grade 1 Qualified and Manufactured on an Automotive Grade Flow
  • Space-Saving, 3 mm × 3 mm 10-Pin WSON and MSOP-PowerPAD Packages
  • Wide Input Voltage Range: 3 V to 20 V
  • Wide Output Voltage Range: 1 V to 18 V
  • LM27341 Delivers 1.5-A Maximum Output Current
  • LM27342 Delivers 2-A Maximum Output Current
  • High Switching Frequency: 2 MHz
  • Frequency Synchronization:
    1 MHz < fSW < 2.35 MHz
  • 150-mΩ NMOS Switch With Internal Bootstrap Supply
  • 70-nA Shutdown Current
  • Internal Voltage Reference Accuracy of 1%
  • Peak Current-Mode, PWM Operation
  • Thermal Shutdown
  • LM27341-Q1 and LM27342-Q1 are AEC-Q100 Grade 1 Qualified and Manufactured on an Automotive Grade Flow

The LM2734x and LM2734x-Q1 regulators are monolithic, high-frequency, PWM step-down DC-DC converters in 10-pin WSON and 10-pin MSOP-PowerPAD packages. They contain all the active functions to provide local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components, the LM2734x and LM2734x-Q1 are easy to use. The ability to drive 1.5-A or 2-A loads respectively, with an internal 150-mΩ NMOS switch results in the best power density available. The world-class control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included, which features an ultra-low shutdown current of 70 nA. The LM2734x and LM2734x-Q1 use peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

The LM2734x and LM2734x-Q1 regulators are monolithic, high-frequency, PWM step-down DC-DC converters in 10-pin WSON and 10-pin MSOP-PowerPAD packages. They contain all the active functions to provide local DC-DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components, the LM2734x and LM2734x-Q1 are easy to use. The ability to drive 1.5-A or 2-A loads respectively, with an internal 150-mΩ NMOS switch results in the best power density available. The world-class control circuitry allows for on-times as low as 65 ns, thus supporting exceptionally high frequency conversion. Switching frequency is internally set to 2 MHz and synchronizable from 1 to 2.35 MHz, which allows the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 90% are easy to achieve. External shutdown is included, which features an ultra-low shutdown current of 70 nA. The LM2734x and LM2734x-Q1 use peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.
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LM27341-Q1 正在供货 1.5A - 具有频率同步的宽输入范围降压稳压器 1.5 A Version

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类型 标题 下载最新的英语版本 日期
* 数据表 LM2734x and LM2734x-Q1 2-MHz, 1.5-A or 2-A, Wide Input Range, Step-Down, DC-DC Regulator With Frequency Synchronization 数据表 (Rev. F) PDF | HTML 2016年 9月 12日
用户指南 LM27341 Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 2021年 12月 17日
应用手册 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (Rev. C) 2013年 4月 23日
应用手册 AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) 2013年 4月 23日
应用手册 Application Note 1187 Leadless Leadframe Package (LLP) (cn) 2011年 11月 1日
应用手册 A Guide to Board Layout for Best Thermal Resistance for Exposed Packages (cn) 2006年 9月 7日
应用手册 Application Note 1197 Selecting Inductors for Buck Converters (cn) 2004年 5月 1日
应用手册 AN-1229 SIMPLE SWITCHER PCB Layout Guidelines (cn) 2004年 5月 1日

设计和开发

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评估板

LM27342MYEVAL — 具有频率同步功能的 LM27342MY（10 引脚 eMSOP）2MHz 2A 宽输入降压稳压器 EVM

The LM27342 demonstration board is designed to provide the power supply design engineer with a fully functional regulator design which can be synchronized to an external clock between 1000 kHz and 2350 kHz. The evaluation board provides a 3.3V output with a 2A current capability. The wide input (...)

用户指南: PDF | HTML
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仿真模型

LM27342 PSpice Transient Model

SNVM222.ZIP (166 KB) - PSpice Model
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仿真模型

LM27342 Unencrypted PSpice Transient Model

SNVMAV5.ZIP (2 KB) - PSpice Model
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封装 引脚 CAD 符号、封装和 3D 模型
HVSSOP (DGQ) 10 Ultra Librarian
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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